Light source connection member, light emitting device and display device

Abstract

A light source connection member ( 33 ) is provided with a front surface light emitting unit ( 32 a ) on which a front surface red color LED ( 61 a ), a front surface first green color LED ( 62 a ), a front surface second green color LED ( 63 a ) and a front surface blue color LED ( 64 a ) that emit light from the front surface of the light source connection member ( 33 ) are mounted; a rear surface light emitting unit ( 32 b ) on which a rear surface red color LED ( 61 b ), a rear surface first green color LED ( 62 b ), a rear surface second green color LED ( 63 b ) and a rear surface blue color LED ( 64 b ) that emit light from a rear surface side are mounted; and a connection member ( 34 ) that connects the front surface light emitting unit ( 32 a ) with the rear surface light emitting unit ( 32 b ). Further, a connection member ( 34 ) has an electric conductor ( 40 ) electrically connected to each color LED provided at the front surface light emitting unit ( 32 a ) and the rear surface light emitting unit ( 32 b ), respectively.

1 . A light source connection member comprising:
 a plurality of light sources; and   a metallic conductor that has a front surface and a rear surface and through which the plurality of light sources are connected to each other to form the light source connection member, wherein   the metallic conductor comprises an electric conductor that is electrically connected to the plurality of light sources and that forms an electric power supply route for the plurality of light sources, and   the plurality of light sources comprise a front surface light source that emits light from the front surface side of the metallic conductor and a rear surface light source that emits light from the rear surface side of the metallic conductor.   
     
     
         2 . The light source connection member according to  claim 1 , wherein the metallic conductor further comprises a heat conductor that is provided so as to be electrically isolated from the electric conductor on the same plane as the electric conductor, and that forms a heat radiation route for heat produced by the front surface light source and the rear surface light source. 
     
     
         3 . The light source connection member according to  claim 2 , wherein
 the front surface light source comprises a front surface light emitting element that is attached to the front surface of the heat conductor, and   the rear surface light source comprises a rear surface light emitting element that is attached to the rear surface of the heat conductor.   
     
     
         4 . The light source connection member according to  claim 1 , wherein
 each of the front surface light source and the rear surface light source comprises a red light emitting unit, a green light emitting unit and a blue light emitting unit, respectively, and   the electric conductor comprises a red electric conductor that serially connects the red light emitting unit provided to the front surface light source and the red light emitting unit provided to the rear surface light source to each other, a green electric conductor that serially connects the green light emitting unit provided to the front surface light source and the green light emitting unit provided to the rear surface light source to each other, and a blue electric conductor that serially connects the blue light emitting unit provided to the front surface light source and the blue light emitting unit provided to the rear surface light source to each other.   
     
     
         5 . A light emitting device comprising:
 a frame that has a back surface portion and side surface portions enclosing the back surface portion; and   a band-shaped light source that is formed by connecting a plurality of light sources through a metallic conductor having a front surface and a rear surface, and that is attached to the frame, wherein   the metallic conductor comprises an electric conductor that is electrically connected to the plurality of light sources and that forms an electric power supply route for the plurality of light sources,   the plurality of light sources comprise a front surface light source that emits light from the front surface side of the metallic conductor and a rear surface light source that emits light from the rear surface side of the metallic conductor, and   the band-shaped light source is attached to the frame so that the front surface light source and the rear surface light source face the side surface portions, respectively.   
     
     
         6 . The light emitting device according to  claim 5 , wherein
 the back surface portion of the frame comprises a reflection body formed thereon, the reflection body being provided along the band-shaped light source, and reflecting light emitted by the front surface light source and the rear surface light source.   
     
     
         7 . A display device comprising:
 a display panel that displays an image; and   a backlight that is provided on a back side of the display panel, and that illuminates the display panel with light, wherein   the backlight comprises:
 a frame that has a back surface portion arranged so as to face the display panel, and side surface portions enclosing the back surface portion; and 
 a plurality of band-shaped light sources that are each formed by connecting a plurality of light sources through a metallic conductor having a front surface and a rear surface, and that are attached to the frame so as to be arrayed, wherein 
   the metallic conductor comprises an electric conductor that is electrically connected to the plurality of light sources and that forms an electric power supply route for the plurality of light sources,   the plurality of light sources comprise a front surface light source that emits light from the front surface side of the metallic conductor and a rear surface light source that emits light from the rear surface side of the metallic conductor, and   each of the plurality of band-shaped light sources is attached to the frame so that the front surface light source and the rear surface light source face the side surface portions, respectively.   
     
     
         8 . The display device according to  claim 7 , wherein, in each of the plurality of band-shaped light sources, arrangement of the front surface light source and the rear surface light source at each column is the same.